Located in south Sand Springs, Pratt Library had its humble beginnings in a small trailer on March 23, 1963, after the community of Prattville was annexed by the city of Sand Springs. The area had experienced phenomenal growth resulting in more population, schools, and businesses, thus needing a library other than the one located in downtown Sand Springs.

The Tulsa City/County Library System recognized the need and opened the Pratt Library branch in the 590 sq. ft. trailer/mobile home at 3905 Walnut Creek Drive. The space quickly became crowded with materials and customers. For thirteen years, the library was open only twenty-one hours per week yet managed to average 3500-5000 items checked out per month. The library was hard-pressed to contain the large, and growing, number of attendees for storytimes and other programs. If weather permitted, events were moved outside to accommodate the crowds.

Continuing community growth and library usage demanded a larger facility. Librarians Joan McPherson and Billye Hopkins opened the 3100 sq. ft. Harry Pratt Library, February 1976, at 3219 S. 113 W. Ave. The new library was a welcomed spacious and comfortable building packed with more items to meet customer requests, plus a meeting room for community use. Book capacity was doubled.

South Sand Springs continued to grow and library services expanded and grew as well. It was time for Pratt Library to renovate and grow once again to meet the demands of its customers. May 1991, the library added 2790 sq. ft. to the existing space, enlarging some areas and increasing the capacity for new materials. Circulation rose and continues to rise as customers’ needs are met. The library is now open six days, fifty four hours per week.